The Lab Two Roll Mill is an electric mixing equipment able to masticate and mix polymers, including rubber, plastic, elastomer materials, or mixtures with similar melting points by means of a pair of rotating rolls preheated to a required temperature, converting raw materials into various compounds. It is an indispensable machine for formula development, color matching, small batch testing, pilot production, contrast, and quality control in the plastic and rubber industries.
Addictives in the form of particles, powder, and liquid are allowed to be added as activators, fillers, or oils into the base. With the rotation of the two rolls, the internal macromolecular chains of the raw materials are broken accordingly for mastication, and the compositions inside the rubber compound are further dispensed to complete mixing, thus producing sheet-like materials for further molding desired products. During the process, the operator needs to keep cutting, folding, and rolling the material on the front roll manually with a tool made of bamboo or wood to enhance the uniformity of the compositions.

Item	Specification	Remarks
Type	XK-160-6
Roller Diameter	160 mm
Roller Width	350 mm
Linear Velocity of Front Roller	18r/min
Speed Ratio of Rollers (Front/Rear)	1:1.29
Maximum Roller Distance	5 mm
Production Yield	1.5-3.0 KG per time	Electric/oil/steam heating and circulating water cooling.
Motor Powder	5.5/7.5 KW
Weight	About 1000 KG
Dimensions	About 1650*600*1150

Lab Two Roll Mill Working Principle

The raw materials and supplementary ingredients inserted between the two rolls are pulled into the space between the rolls as they rotate, experiencing significant squeezing and shearing forces. This leads to material deformation, enhancing the contact surface area between the components. As stress surpasses the material's threshold, its internal macromolecular chains stretch and break, further dispersing and evenly blending the components. This iterative process continues until the desired chewing or mixing state is attained, resulting in the desired compound in sheet form.